Makes loading custom images, after downloading put a watermark. Paperclip by default puts the files in a folder called styles, such as original, thumb, medium, etc.
I want to hide the original file that is uploaded without a watermark, and leave the original size is available but only with a watermark.

Remove loadable file is not an option, they are needed for the archive.

I want a file kept in the same place and at the same time was not available unauthorized user? For example, a site administrator could view these files, and users could not.

Can cancan restrict access if someone will turn to the original file, the direct link?